Tom Cruise celebrated his 50th birthday on the set of his new film Oblivion, director Joseph Kosinski has revealed.

To celebrate the milestone, Kosinski presented the star with one of the futuristic Moto Bikes from the film.

"He turned fifty, believe it or not, in Iceland while we were shooting and as a gift, on behalf of Universal, I gave him the motorcycle he rides in the film. So now he can add it to his personal collection," said Joseph, who previously helmed Tron: Legacy.

The director admitted he hasn't spotted Tom on the bike but added: "He told me he was going to ride it around Los Angeles, so if anyone sees a guy riding the white Moto Bike from Oblivion in Los Angeles, it's probably Tom."

Tom also gave the director a present of his own.

"He gave me a beautiful die-cast model of the bubble ship in a glass case. It's just gorgeous.

"It is sitting in my house and my three-year-old is obsessed with it. He knows he can't touch it, so he just stares at it," Joseph said.

Tom took three hours before deciding he wanted to play Jack Harper in the sci-fi epic.

"I think he saw a film unlike anything he had ever done before," Kosinski explained. "Obviously he has done science fiction but never a story quite like this.

"He's always looking for a new challenge - he's made like, 40 films - and I think he saw that in this movie.

"I knew an original story needed a star like that to help get the film made, so to get him on board was amazing."

Olga Kurylenko, Morgan Freeman and Andrea Riseborough also star in Oblivion, which is in cinemas now.

The film is among dozens to take advantage of the craggy, unspoilt beauty of Iceland's volcanic landscape.

Other Hollywood productions to have filmed in Iceland include Prometheus, Batman Begins, Die Another Day, A View To A Kill, Journey to the Center of the Earth, Lara Croft: Tomb Raider, Stardust and upcoming movies Thor: The Dark World and Noah.